Cardinals vs Nationals Prediction — AI Finds CAN'T MISS MLB Lines & Props (May 09)

Updated: 2025-05-07T03:31:50.923562ZBy Remi at Leans.AI — AI picks for ATS, ML, OU & props

The St. Louis Cardinals and Washington Nationals are set to clash on May 9, 2025, at Nationals Park, with both teams aiming to gain momentum in their respective divisions. The Cardinals, currently at 19-19, look to build on their recent success, while the Nationals, at 17-21, aim to leverage home-field advantage to turn their season around.

Get key insights, betting trends, and AI-powered predictions to help incorporate into your betting strategies.

AI Sports Betting Algorithm Remi

GAME INFO

Date: May 09, 2025

Start Time: 6:45 PM EST​

Venue: Nationals Park​

Nationals Record: (17-21)

Cardinals Record: (19-19)

OPENING ODDS

STL Moneyline: -104

WAS Moneyline: -115

STL Spread: -1.5

WAS Spread: +1.5

Over/Under: 8.5

STL
Betting Trends

  • The Cardinals have been strong against the spread (ATS) recently, with a 5-0 record in their last five games.

WAS
Betting Trends

  • The Nationals have struggled ATS at home, with a 2-6 record in their last eight home games against St. Louis.

MATCHUP TRENDS

  • The total has gone OVER in 12 of the last 15 games between the Cardinals and Nationals, indicating a trend toward high-scoring affairs.

STL vs. WAS
Best Prop Bet

  • Remi's searched hard and found the best prop for this matchup: J. Wood over 0.5 Total Bases.

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St. Louis vs Washington Prediction & Odds:
Free MLB Betting Insights for 5/9/25

The May 9, 2025 matchup between the St. Louis Cardinals and Washington Nationals at Nationals Park arrives at a pivotal time for both teams, each seeking to build momentum and correct mid-season inconsistencies. The Cardinals, sitting at an even 19-19, are riding a five-game winning streak and appear to be gaining traction in the NL Central with a well-rounded offensive approach and improving pitching depth. Their lineup has found a consistent groove, hitting a collective .260 with a .334 on-base percentage and .401 slugging, offering both table-setting at the top and run-driving capability in the heart of the order. Erick Fedde takes the mound for St. Louis, aiming to sharpen his command and improve on a 2-3 record and 4.78 ERA. While he’s been vulnerable at times, his experience and ability to work through traffic make him a serviceable starter when supported by run production. On the other side, the Nationals are 17-21 and still searching for stability, particularly on the mound where their pitching staff holds a concerning 5.37 ERA. However, there is optimism around starter Mitchell Parker, who enters with a solid 3-2 record and 3.48 ERA and has shown the ability to navigate tough lineups with poise.

Washington’s offense, hitting just .242 as a team, has struggled to sustain rallies and lacks consistent pop, which has made timely hitting critical to their success. Defensively, both clubs have played relatively clean baseball, but the Cardinals have had the clear edge in late-inning execution, thanks in part to a bullpen that has recently found its footing. One trend that stands out is how frequently these two teams play high-scoring games—the total has gone OVER in 12 of their last 15 meetings—suggesting that both offenses could have opportunities if the starters aren’t sharp. Historically, St. Louis has also controlled this matchup, winning six of the last nine overall and six of their last eight at Nationals Park. Weather could also play a small role, with cloudy skies and cooler temperatures forecasted, potentially affecting fly ball carry and pitcher grip. For the Cardinals, this game represents a chance to keep their win streak alive and move above .500 for the first time in weeks, while for the Nationals, it’s an opportunity to shake off recent struggles and protect home field in what could be the start of a crucial homestand. Both teams have clear strengths and weaknesses, and the game may come down to which starting pitcher can settle in fastest and which lineup can capitalize on early scoring chances. While the Nationals are eager for a momentum shift, the Cardinals arrive as the hotter team with a more consistent formula for winning, and they’ll look to extend that edge in this inter-divisional showdown.

St. Louis Cardinals MLB Preview

The St. Louis Cardinals enter their May 9, 2025 matchup against the Washington Nationals with renewed confidence and growing consistency after leveling their record at 19-19 on the back of a five-game winning streak. A team that struggled with identity and rhythm early in the season has begun to find its stride, particularly on the offensive end where the Cardinals boast a team batting average of .260, an on-base percentage of .334, and a slugging percentage of .401. This offensive balance has allowed them to score in a variety of ways, combining situational hitting with timely power, and enabling them to build leads rather than always playing from behind. The middle of the order has begun to click, with veteran hitters showing patience and younger players stepping up to lengthen the lineup. On the mound, right-hander Erick Fedde is slated to start, bringing a 2-3 record and a 4.78 ERA into this outing. While not dominant, Fedde has shown the ability to pitch deep enough into games to keep his team competitive, especially when the offense gives him early support.

The Cardinals’ bullpen, a concern earlier in the year, has settled down in recent weeks, improving its ability to hold leads and close games—key components in any sustained winning run. Defensively, St. Louis has tightened up, committing fewer errors and executing key plays with greater consistency, a sign that the team is operating with more confidence and focus. Their success in head-to-head matchups with the Nationals adds to their psychological edge; the Cardinals are 6-2 in their last eight games played at Nationals Park and 6-3 overall in their last nine meetings with Washington. With momentum on their side and a lineup capable of creating pressure throughout the order, the Cardinals come into this road game expecting to win and continue their push toward the upper half of the NL Central. The key for St. Louis will be maintaining offensive pressure throughout the game and getting another solid outing from Fedde to avoid overexposing the bullpen. If they can control the pace early and neutralize Washington’s few offensive threats, the Cardinals have a prime opportunity to extend their win streak, gain ground in the standings, and solidify their identity as a legitimate contender in a wide-open National League race.

The St. Louis Cardinals and Washington Nationals are set to clash on May 9, 2025, at Nationals Park, with both teams aiming to gain momentum in their respective divisions. The Cardinals, currently at 19-19, look to build on their recent success, while the Nationals, at 17-21, aim to leverage home-field advantage to turn their season around. St. Louis vs Washington AI Prediction: Free MLB Betting Insights for May 09. Credit USA TODAY/IMAGN

Credit: USA TODAY/IMAGN

Washington Nationals MLB Preview

The Washington Nationals return to Nationals Park on May 9, 2025, looking to halt a recent slide and reignite their season as they sit at 17-21, struggling to find sustained success in both pitching and offense. While the Nationals have shown flashes of potential, they remain a team searching for consistency, particularly on the mound where their collective ERA of 5.37 ranks among the league’s worst. Left-hander Mitchell Parker will take the ball with a 3-2 record and a respectable 3.48 ERA, representing one of the more dependable arms in the rotation. Parker’s recent outings have shown his capability to limit damage and pitch deep into games, but he’s often received little run support, a recurring issue that’s plagued the Nationals throughout the first month and a half of the season. Offensively, Washington holds a .242 team batting average with a .314 on-base percentage and a .386 slugging percentage, numbers that reflect a lineup still struggling to string together quality at-bats and generate big innings. The Nationals’ inability to capitalize with runners in scoring position has been particularly problematic, turning competitive games into missed opportunities. Players like CJ Abrams and Lane Thomas have shown promise at the top of the order, but the middle and bottom of the lineup have lacked consistent production, making it easier for opposing pitchers to navigate key innings.

Defensively, the Nationals have remained adequate, avoiding major lapses and giving their pitchers some breathing room with solid infield play and improved outfield positioning. The bullpen has been a mixed bag—capable of locking down innings on some nights and imploding under pressure on others—adding to the overall uncertainty surrounding late-game scenarios. Their recent track record at home, especially against the Cardinals, is troubling; Washington is 2-6 in their last eight games against St. Louis at Nationals Park and has struggled to contain their lineup in high-scoring affairs. With the Cardinals on a five-game win streak and showing much better form, the Nationals will need a collective effort to pull off a home win—strong innings from Parker, timely hits from the middle of the order, and clean defense from start to finish. This game marks an important opportunity for Washington to send a message that they can compete with hotter, more balanced teams and that their season isn’t yet defined by early inconsistency. If Parker can set the tone on the mound and the bats finally come alive in key spots, the Nationals could use this matchup to reset the tone of their season and regain some lost ground in the NL East.

St. Louis vs. Washington Prop Picks (AI)

Remi is pouring through loads of data on each team. In fact, anytime the Cardinals and Nationals play there’s always several intriguing angles to key in on. Not to mention games played at Nationals Park in May seemingly never follow normal, predictable patterns.
Remi's searched hard and found the best prop for this matchup: J. Wood over 0.5 Total Bases.

St. Louis vs. Washington Prediction (AI)

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Remi, our AI sports wizard, has been pouring over millions of data from every facet between the Cardinals and Nationals and using recursive machine learning and cutting-edge AI to analyze the data to a single cover probability.

Remi has been most fixated on the linear correlation of factor emotional bettors regularly put on St. Louis’s strength factors between a Cardinals team going up against a possibly rested Nationals team. We’ve found the true game analytics appear to reflect a slight lean against one Vegas line in particular.

Unlock this in-depth AI prediction and all of our MLB AI picks for FREE now.

Below is our current AI St. Louis vs Washington picks, computer picks Cardinals vs Nationals, best bets, model edges, confidence ratings.

DATE GAME LEAN %WIN UNITS LEVEL
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Cardinals Betting Trends

The Cardinals have been strong against the spread (ATS) recently, with a 5-0 record in their last five games.

Nationals Betting Trends

The Nationals have struggled ATS at home, with a 2-6 record in their last eight home games against St. Louis.

Cardinals vs. Nationals Matchup Trends

The total has gone OVER in 12 of the last 15 games between the Cardinals and Nationals, indicating a trend toward high-scoring affairs.

St. Louis vs. Washington Game Info

St. Louis vs Washington starts on May 09, 2025 at 6:45 PM EST.

Spread: Washington +1.5
Moneyline: St. Louis -104, Washington -115
Over/Under: 8.5

St. Louis: (19-19)  |  Washington: (17-21)

Remi's searched hard and found the best prop for this matchup: J. Wood over 0.5 Total Bases.. Prices move—always shop for the best number.

The total has gone OVER in 12 of the last 15 games between the Cardinals and Nationals, indicating a trend toward high-scoring affairs.

STL trend: The Cardinals have been strong against the spread (ATS) recently, with a 5-0 record in their last five games.

WAS trend: The Nationals have struggled ATS at home, with a 2-6 record in their last eight home games against St. Louis.

See our latest MLB picks and odds pages for 2025 to compare prices before you bet.

St. Louis vs. Washington Odds

AI algorithm Remi is pouring through loads of data points on each team. In fact, anytime the St. Louis vs Washington trends are analyzed, there’s always several intriguing angles to key in on. Not to mention games played at extreme travel distance almost always follow normal, predictable patterns.

St. Louis vs Washington Opening Odds

STL Moneyline: -104
WAS Moneyline: -115
STL Spread: -1.5
WAS Spread: +1.5
Over/Under: 8.5

St. Louis vs Washington Live Odds

Games PTS ML SPR O/U
Oct 19, 2025 8:04PM EDT
Seattle Mariners
Toronto Blue Jays
10/19/25 8:04PM
Mariners
Blue Jays
+112
-123
+1.5 (-195)
-1.5 (+171)
O 7.5 (-114)
U 7.5 (-101)

MLB Past Picks

Remi—our in-house AI—prices every game and prop using multi-season priors, tempo/efficiency, injury/usage signals, and market movement.
We publish fair prices, recommended “buy-to” numbers, and confidence so you can bet prices, not teams.

This preview covers St. Louis Cardinals vs. Washington Nationals on May 09, 2025 at Nationals Park.
Odds shown reflect widely available numbers and may update closer to kickoff.

Want more? Check live edges, player props, and line moves on our MLB odds pages, and compare prices before you place a bet.

    LEAN     %WIN     UNITS RESULT
TOR@SEA OVER 7 54.9% 3 WIN
LAD@MIL UNDER 7.5 56.6% 6 WIN
TOR@NYY OVER 8 54.9% 4 WIN
TOR@NYY CARLOS RODON OVER 1.5 TOTAL WALKS ALLOWED 53.3% 3 WIN
NYY@TOR OVER 7.5 54.8% 2 WIN
LAD@PHI OVER 7 53.8% 3 WIN
SD@CHC CHC -109 53.8% 3 WIN
SD@CHC OVER 7.5 54.5% 4 LOSS
SD@CHC CHC -111 54.8% 4 LOSS
CIN@LAD SHOHEI OHTANI OVER 1.5 BASES 53.5% 3 WIN
BOS@NYY OVER 7 53.8% 3 LOSS
CIN@LAD ELLY DE LA CRUZ OVER 0.5 BASES 54.4% 4 LOSS
ARI@SD SD -131 57.3% 4 WIN
DET@BOS BOS -115 56.4% 5 WIN
NYM@CHC NYM -110 54.1% 3 WIN
HOU@ATH ATH +118 50.8% 4 WIN
NYM@CHC OVER 7 54.5% 3 WIN
STL@SF OVER 7.5 55.9% 5 LOSS
KC@LAA TYLER TOLBERT UNDER 1.5 BASES 54.4% 4 WIN
MIL@SD UNDER 9 54.7% 4 WIN
MIA@PHI KYLE SCHWARBER OVER 1.5 HITS+RUNS+RBIS 53.3% 3 WIN
WAS@NYM OVER 8.5 56.1% 6 LOSS
LAA@COL COL +108 50.5% 3 WIN
TOR@KC UNDER 9 54.7% 4 LOSS
SEA@KC KC +1.5 62.3% 5 LOSS
NYY@MIN OVER 9 55.1% 4 WIN
MIA@COL OVER 10.5 55.0% 4 WIN
MIA@COL AGUSTIN RAMIREZ OVER 1.5 HITS+RUNS+RBIS 54.3% 4 WIN
SEA@KC BOBBY WITT UNDER 0.5 SINGLES 54.4% 4 LOSS
PHI@LAD LAD -113 54.7% 4 LOSS
NYY@BOS OVER 7.5 54.3% 3 WIN
KC@PHI PHI -130 58.3% 4 WIN
LAD@SF OVER 7.5 54.7% 4 LOSS
NYM@PHI PHI -122 55.6% 4 WIN
KC@CLE KC -104 52.0% 3 WIN
CIN@SD JAKE CRONEWORTH OVER 0.5 HITS 53.1% 3 WIN
WAS@MIA MIA -123 55.2% 4 LOSS
LAA@KC UNDER 9.5 54.9% 3 WIN
TEX@ARI UNDER 9 54.2% 4 WIN
SF@COL UNDER 11.5 56.4% 6 LOSS
SF@COL RAFAEL DEVERS OVER 1.5 BASES 56.1% 6 WIN
MIA@WAS WAS -110 54.4% 4 WIN
NYM@DET OVER 8.5 54.5% 4 WIN
TEX@ARI UNDER 9.5 56.4% 6 WIN
TEX@ARI ALEJANDRO OSUNA UNDER 1.5 BASES 54.1% 4 LOSS
ATL@CHC CHC -116 55.1% 3 WIN
PHI@MIL OVER 8.5 55.0% 3 WIN
ARI@LAD SHOHEI OHTANI OVER 2.5 BASES 54.2% 4 WIN
SEA@CLE CLE +1.5 57.2% 3 WIN
CHC@SF CHC -105 54.1% 4 LOSS
NYY@CHW RYAN MCMAHON OVER 0.5 BASES 54.1% 4 WIN